I have used Gecko drives a lot, mostly with Mach 3. They are simple and easy to use. I always use the G320's because I like having the position feedback (Servo). I put them on 2 Moore G18 Jig Grinders and we can hold position ( hole to hole ) of ±.0002" no problem. They have been running for a couple years now every day. I am not an EMC2 expert, But I don't see why you would have any problems with that setup.